Nano WO3 may be used to prepare a new type of environmentally friendly coating and therefore be applied to architectural glass in the form of window heat insulation film. The obtained thin film is a nano material of tungsten trioxide nano particles that is non-toxic, non-irritating, acid-resistant and alkaline resisting.

Nano WO3 may be applied to thermal insulating glass in the form of a heat-insulating film. Whether it is used on the architectural glass or on the automotive glass, the obtained transparent heat-insulation glass has good heat insulation effect and does not affect the passage of visible light. Specifically, the ultraviolet shielding rate is higher than 97%, the infrared blocking rate is higher than 90%, and the visible light transmission rate is higher than 70%.

Nano WO3 is a nano material that may be used to prepare heat insulation coating for applying to architectural glass. Compared with traditional coatings, the obtained new type of thermal insulation coating of tungsten trioxide nano particles has high ultraviolet shielding rate and obvious heat insulation advantages. Also, such transparent coating film has characteristics of high hardness, energy conservation, environmental protection, and long service life. Moreover, it is easy and convenient to construct. In a word, it is easy to use with excellent performance.

Nano WO3 is a nano material with special optical properties that may be used to prepare a new environmentally friendly thermal insulation coating. The obtained transparent architectural glass coating has a high shielding rate in the infrared and ultraviolet regions and a high transmittance in the visible region. So, these architectural glasses will have high light transmission.